News & Insights
- The 2023 Edition is Available of A Trademark is Not a Copyright or a Patent by William M. BorchardWilliam M. Borchard
- Brewery Industry Insight—TACO TUESDAY is Rejected as a Trademark for BeerRobert J. English
- Patent Law Alert -- Federal Circuit Affirms that Artificial Intelligence Cannot Be an “Inventor”Sarah Sue Landau, Mark Montague
- Trademark Law Alert – The USPTO Shortens Some Office Action Response Deadlines to Three MonthsSarah Sue Landau, Deborah K. Squiers
On My Mind Blog

Case Studies
We established that cigarette rolling paper size designations are generic.
We succesfully represented our client, Major League Baseball Partners, Inc.
The Second Circuit affirms summary judgment for our client.
What They Say
“One of the best trademark outfits in the United States”, Cowan Liebowitz & Latman is “an exceptional IP boutique that serves many leading brands”. “It is a huge player on the prosecution side, as it houses a raft of skilled professionals, which grants it a reservoir of expertise that few can match.” The group also boasts an enviable record in litigation and has been central in a myriad of important cases. “ The consistency of its lawyers and its longevity speak volumes to its quality.”
2018 WTR 1000, The World’s Leading Trademark Professionals“Cowan is by far the best firm we’ve worked with and Jonathan Z. King is the principal reason. . . .In [one] case . . . the company threw a ton of money and resources against us, with a large trial team . . . but Jonny simply ripped them apart with his courtroom abilities and his sharp analysis of trademark law supporting our case. He’s so smart and really understands our business, but is also incredibly unpretentious and down-to-earth.”
2018 Law.com“One of the best anywhere in the world when it comes to trademark counselling, prosecution and litigation, Cowan Liebowitz & Latman renders an A-to-Z service to prestigious companies from a cross-section of brand-intensive industries. The team sustains relationships over long periods of time, which reflects its unswerving commitment to quality and superior service. Further evidence of this can be seen in the superlative feedback garnered by multiple team members.”
2021 WTR 1000 – The World’s Leading Trademark Professionals”In cases where settlements are possible, [CLL's] lawyers will always foster settlement. However, in cases where they have to litigate hard, they do. Moreover, the time given to each matter is ample despite their busy schedules. I’ve always found that they make clients feel special and, often, the feeling is that my matter is the only matter they are handling because of the constant care given to it. This is rare in law firm partners.”
2022 The Legal 500“I like their stick-to-it-tiveness (sic.). As one example, we have found foreign trademark offices do not treat trademark registrations the same way as a registration would be treated by the USPTO. Cowan, Liebowitz, with our advance permission, fights to get the registration the way we want it. In my experience, they always win.”
2021 The Legal 500
Why Us
Founded in 1957, we maintain long-term relationships by providing sound advice, quality legal work, and highly-responsive, personalized service.
What We Do
We represent clients of all sizes across a broad range of industries. The boutique size of our firm, and the breadth of our practice capabilities, allow us to provide a multidisciplinary approach in a cost-effective manner.
Our Clients
Our experience spans a broad range of industries and is international in scope. We appreciate the opportunity of growing with successful companies and brands, as well as creative individuals and accomplished executives.